diff options
Diffstat (limited to 'keyboards/cipulot/rf_r1_8_9xu/ec_switch_matrix.c')
| -rw-r--r-- | keyboards/cipulot/rf_r1_8_9xu/ec_switch_matrix.c | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/keyboards/cipulot/rf_r1_8_9xu/ec_switch_matrix.c b/keyboards/cipulot/rf_r1_8_9xu/ec_switch_matrix.c deleted file mode 100644 index 3f25e365c0..0000000000 --- a/keyboards/cipulot/rf_r1_8_9xu/ec_switch_matrix.c +++ /dev/null @@ -1,183 +0,0 @@ -/* Copyright 2023 Cipulot - * - * This program is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with this program. If not, see <http://www.gnu.org/licenses/>. - */ - -#include "ec_switch_matrix.h" -#include "analog.h" -#include "atomic_util.h" -#include "print.h" -#include "wait.h" - -/* Pin and port array */ -const uint32_t row_pins[] = MATRIX_ROW_PINS; -const uint8_t col_channels[] = MATRIX_COL_CHANNELS; -const uint32_t mux_sel_pins[] = MUX_SEL_PINS; - -static ecsm_config_t config; -static uint16_t ecsm_sw_value[MATRIX_ROWS][MATRIX_COLS]; - -static adc_mux adcMux; - -static inline void discharge_capacitor(void) { - writePinLow(DISCHARGE_PIN); -} -static inline void charge_capacitor(uint8_t row) { - writePinHigh(DISCHARGE_PIN); - writePinHigh(row_pins[row]); -} - -static inline void init_mux_sel(void) { - for (int idx = 0; idx < 3; idx++) { - setPinOutput(mux_sel_pins[idx]); - } -} - -static inline void select_mux(uint8_t col) { - uint8_t ch = col_channels[col]; - writePin(mux_sel_pins[0], ch & 1); - writePin(mux_sel_pins[1], ch & 2); - writePin(mux_sel_pins[2], ch & 4); -} - -static inline void init_row(void) { - for (int idx = 0; idx < MATRIX_ROWS; idx++) { - setPinOutput(row_pins[idx]); - writePinLow(row_pins[idx]); - } -} - -/* Initialize the peripherals pins */ -int ecsm_init(ecsm_config_t const* const ecsm_config) { - // Initialize config - config = *ecsm_config; - - palSetLineMode(ANALOG_PORT, PAL_MODE_INPUT_ANALOG); - adcMux = pinToMux(ANALOG_PORT); - - //Dummy call to make sure that adcStart() has been called in the appropriate state - adc_read(adcMux); - - // Initialize discharge pin as discharge mode - writePinLow(DISCHARGE_PIN); - setPinOutputOpenDrain(DISCHARGE_PIN); - - // Initialize drive lines - init_row(); - - // Initialize multiplexer select pin - init_mux_sel(); - - // Enable AMUX - setPinOutput(APLEX_EN_PIN_0); - writePinLow(APLEX_EN_PIN_0); - setPinOutput(APLEX_EN_PIN_1); - writePinLow(APLEX_EN_PIN_1); - - return 0; -} - -int ecsm_update(ecsm_config_t const* const ecsm_config) { - // Save config - config = *ecsm_config; - return 0; -} - -// Read the capacitive sensor value -uint16_t ecsm_readkey_raw(uint8_t channel, uint8_t row, uint8_t col) { - uint16_t sw_value = 0; - - // Select the multiplexer - if (channel == 0) { - writePinHigh(APLEX_EN_PIN_0); - select_mux(col); - writePinLow(APLEX_EN_PIN_0); - } else { - writePinHigh(APLEX_EN_PIN_1); - select_mux(col); - writePinLow(APLEX_EN_PIN_1); - } - - // Set strobe pins to low state - writePinLow(row_pins[row]); - ATOMIC_BLOCK_FORCEON { - // Set the row pin to high state and have capacitor charge - charge_capacitor(row); - // Read the ADC value - sw_value = adc_read(adcMux); - } - // Discharge peak hold capacitor - discharge_capacitor(); - // Waiting for the ghost capacitor to discharge fully - wait_us(DISCHARGE_TIME); - - return sw_value; -} - -// Update press/release state of key -bool ecsm_update_key(matrix_row_t* current_row, uint8_t row, uint8_t col, uint16_t sw_value) { - bool current_state = (*current_row >> col) & 1; - - // Press to release - if (current_state && sw_value < config.ecsm_actuation_threshold) { - *current_row &= ~(1 << col); - return true; - } - - // Release to press - if ((!current_state) && sw_value > config.ecsm_release_threshold) { - *current_row |= (1 << col); - return true; - } - - return false; -} - -// Scan key values and update matrix state -bool ecsm_matrix_scan(matrix_row_t current_matrix[]) { - bool updated = false; - - // Disable AMUX of channel 1 - writePinHigh(APLEX_EN_PIN_1); - for (int col = 0; col < sizeof(col_channels); col++) { - for (int row = 0; row < MATRIX_ROWS; row++) { - ecsm_sw_value[row][col] = ecsm_readkey_raw(0, row, col); - updated |= ecsm_update_key(¤t_matrix[row], row, col, ecsm_sw_value[row][col]); - } - } - - // Disable AMUX of channel 1 - writePinHigh(APLEX_EN_PIN_0); - for (int col = 0; col < sizeof(col_channels); col++) { - for (int row = 0; row < MATRIX_ROWS; row++) { - ecsm_sw_value[row][col + 8] = ecsm_readkey_raw(1, row, col); - updated |= ecsm_update_key(¤t_matrix[row], row, col + 8, ecsm_sw_value[row][col + 8]); - } - } - return updated; -} - -// Debug print key values -void ecsm_print_matrix(void) { - for (int row = 0; row < MATRIX_ROWS; row++) { - for (int col = 0; col < MATRIX_COLS; col++) { - uprintf("%4d", ecsm_sw_value[row][col]); - if (col < (MATRIX_COLS - 1)) { - print(","); - } - } - print("\n"); - } - print("\n"); -} |